Add 80/70 and 28/54
1st number: 1 10/70, 2nd number: 28/54
80/70 + 28/54 is 314/189.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 70 and 54 is 1890
Next, find the equivalent fraction of both fractional numbers with denominator 1890 - For the 1st fraction, since 70 × 27 = 1890,
80/70 = 80 × 27/70 × 27 = 2160/1890 - Likewise, for the 2nd fraction, since 54 × 35 = 1890,
28/54 = 28 × 35/54 × 35 = 980/1890 - Add the two like fractions:
2160/1890 + 980/1890 = 2160 + 980/1890 = 3140/1890 - 3140/1890 simplified gives 314/189
- So, 80/70 + 28/54 = 314/189
In mixed form: 1125/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 80/70+56/54 80/70+84/54